Fountain pen



June 28 1927.

T. KOVACS FOUNTAIN PEN Filed June 16. 1924 Inventor:

Ion

Patented June 28, 1927.

PATENT ,OFFICE.

THEODOB novice, or mam, ITALY.

roun'ram ran.

Application filed June 18, 1924;, Serial No. 720,480, and in GermanyJuly 17, 1998.

There exist already fountain pens which can be filled without unscrewingof the head, but a difficulty experienced with fountain pens of thiskind resides in conducting away the air displaced by the ink when thereser voir of the fountain pen is being filled. The air-dischargechannel must be sufiiciently wide in order to permit the air-bubbles topass therethrough. With most fountainpens of that kind the air-dischargechannel must' be closed when the filling of the reservoiris finished,but this solution of the problem conditions a complicated constructionof the fountain-pen.

It has also been proposed to leave the airdischarge channel openafterthe filling of the reservoir of the fountain-pen, but then that channelis arranged in the head of the fountain-pen, at the inner side of thewriting pen proper, whereas the passage for sup-' plying the latter withink is arranged at the outer side of the pen proper. But as the outerorifice of the air-discharge channel lies remote from the point or tipof the pen proper and is not closed after the filling of the reservoir,it must be comparatively narrower in order to prevent an excessiveentrance of air while the writing is going on. The narrow outer orificeof said channel is located in the height of the filling opening, andcan, therefore, be closed easlly by the ink when the filling takesplace.

Now, according to my invention, the-airdischarge channel is arrangedopposite the lower side of the writing'pen proper at the upper side ofthe ink feeding member together with the ink-supply passage or grooves,whereas the filling-channel is ar'.

ranged at the lower side of the said member. Owing to this arrangementand configuration of said member'which is inserted into the pen-end ofthe fountain-pen, the airdischarge channel can extend to the point ortip of the pen proper where it terminates with a comparatively wideorifice and is closed automatically by the excess of the ink present atthat place while the fountain pen isbeing' used. In the height of thefilling channel the sectional area or Width of tlie air-dischargechannel is such that it canndt be closed by the ink entering into it.

My invention is illustrated by way of example in the accompanyingdrawing in which Fig. 1 shows an axial section through the upper part ofthe fountain-pen, and

Fig. 2 is a cross-section in line 2-2 of Flg. 1;

On the drawing, H is the hollow body or handle of the fountain-pen,'Fthe writ1ng-' pen proper, and T the ink feeding member lnserted into thebody or handle H. The shape of this inserted member in longitudinaldirection and in cross-section appears from the'figures. On the en-sidethe member T is provided with a on itudinal chan-.

nel K which forms the air-*ischarge channel, and on the bottom of thislatter are grooves R forming capillary furrows by which the ink isconducted to the pen F, as indicated by the arrow D'. On the opposite orlower side the member T is so sha ed as to form a channel M which is thefil ing I channel, the communication with the reservoir S beingestablished by two narrow grooves Q, forming cross channels provided inthe circumferential surfaces of said memher. The sectional area of thesecircumferential grooves may be larger than that of axial grooves orpassages without their permitting the entrance of air into the reservoirthrough them if filled with ink. The supplemental air finds access intothe reservoir S ivliicle the writing solely through the channe 7 With afountain-pen devised as shown and described it is possible to fill thereservolv S throu h the passage M provided exclusively for t is purposeas indicated by the arrow A, whereas the displaced air escapes in thedirection of the arrow B through the channel K also serving for theentrance of supplemental air into the reservoir S while writing asindicated by the arrow 0.

Any amount of ink that may have found I access into the closing cap Vscrewed on the body H by means of the thread U can be caused to flow.back into the reservoir by the owner holding the fountain pen inupright position before the closing cap is unscrewed whereby increasedsecurity against soiling I claim: I A fountain pen, comprising, incombination, an ink receptacle and a feed immovably located therein andextending from the open end thereof to'below the pen, said insert havingin its upper side an air-channel having so wide that it is unable toretain ink when capillary grooves in its bottom, and in its the fountainpen is in practioally'vertieal 0 lower side an ink filling ehannelcommuniposition, substantially and for the purpose eating constantlywith said ink receptacle, set forth.

this communication being at least partly so In testimony whereof I haveaflixed my narrow as to be adapted to prevent the passignature.

sage of air therethrough if closed by ink,the 4 first mentionedair-channel being however, THEODOR KOVACS.

